![]() ![]() First, change the condition to „Wet roadway“ (click on the small arrow). If you want to find out the collision speed, the braking distance calculator must be filled out as shown in the screenshot below:Īfter entering the values, do not press the „Calculate“ button immediately. For the correct answer, of course, the stopping distance has to be taken. To be able stopping just in time, the car must be 24.812 m away from the child. In the „starting velocity“ field, you have to put in the value 50 instead of 100. The car’s initial velocity is 50 km/h, a reaction time of two seconds is assumed. What stopping distance does the vehicle have?.What’s the car’s speed when it is hitting the child? The stopping distance should be the same as in 1). The driver runs illegally at 60 km/h through the village.Now the road is wet. What’s the car’s speed at time of the accident?.How far away from the child does the car have to be so that it can stop just in time? A reaction time of one second is assumed.Obstacles – Effect of Speed or Reaction TimeĪ vehicle travels on a dry and even road through a village. Accuracy can not be guaranteed – for corrections or additions please use my contact form!.It is assumed that all the wheels are braked or driven.In curves, there is less acceleration or deceleration possible.The calculation is only valid for uniform acceleration or constant deceleration.Stopping (Braking) distance or acceleration distance.Depending on the road or rail conditions, the two calculators compute the following:.Reference Values for Acceleration or Deceleration.Obstacles – Effect of Speed or Reaction Time.Examples for the Use of these Calculators.Some Notes for the Use of the Calculator (manual).*** The meaning of the two abbreviations l and h can be found here: General Information. * Change the rail or road condition in the first calculator assumption: all wheels are braked.
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